摘要
柴燃并车齿轮系统常在重载、高速、冲击等复杂使役条件下运行,轮齿折断故障将严重影响舰船齿轮副啮合性能。目前多以给定断齿角度与断齿量,研究断齿故障下齿轮副啮合刚度特征,与实际断齿形式下啮合刚度存在较大偏差。为提出任意断齿角度下齿轮副啮合刚度计算方法,将断齿分为平行与不平行于接触线两种折断形式,分别推导任意断齿角度下齿轮副接触线长度计算公式,基于ISO刚度计算准则对任意断齿角度下斜齿轮副啮合刚度进行求解。研究表明:断齿平行于接触线方向时,随着断齿长度增加,啮合刚度受影响时间与强度均增加,越过断齿区域后刚度将瞬间恢复正常,断齿不平行于接触线方向时,在断齿区域内,单齿啮合刚度为零,综合啮合刚度将降低,从断齿区域进入非断齿区域过程中,齿轮单齿刚度和综合刚度将逐渐恢复正常。
Combined diesel and gas gear system often works under heavy load, high speed, impact and other complex conditions. Tooth fracture can significantly affect the meshing quality of marine gear pair. Existing research mainly focused on characteristics of gear pair meshing stiffness based on given angle and number of broken teeth, the results of which showed a large deviation from the meshing stiffness in the actual form of broken teeth. To develop a computational method for gear pair meshing stiffness at any breaking angle, the broken teeth were divided into two forms, i.e. those parallel to the line of contact and those not parallel to the line of contact;their respective computing formula of the length of the line of contact of the gear pair at any broken angle was then derived, and the meshing stiffness of helical gear pair at any broken angle solved based on ISO stiffness calculation criteria. According to the results, when the broken teeth were parallel to the line of contact, as the length of the teeth increased, the time and severity of the impact on meshing stiffness both increased;after passing the broken teeth area, the stiffness would instantly return to normal. When the broken teeth were not parallel to the line of contact, within the broken teeth area, the single tooth meshing stiffness was zero, and general meshing stiffness reduced;when entering the non-broken teeth area from the broken teeth area, both the single tooth and general stiffness would gradually return to normal.
作者
强仕杰
何泽银
孙世政
JIANG ShiJie;HE ZeYin;SUN ShiZheng(School of Mechatronics&Vehicle Engineering,Chongqing Jiaotong University,Chongqing 400014,China;State Key Laboratory of Mechanical Transmission,Chongqing University,Chongqing 400044,China)
出处
《机械强度》
CAS
CSCD
北大核心
2021年第6期1492-1497,共6页
Journal of Mechanical Strength
基金
国家自然科学基金项目(51875057)
机械传动国家重点实验室开放课题(SKLMT-KFKT-201706)资助。
关键词
斜齿轮副
断齿故障
啮合刚度
海洋船舶
接触线长度
Helical gear pair
Broken teeth fault
Meshing stiffness
Ocean shipping
Length of contact line
